1.路桩～圆石墩~路障
do you know,what is it?
bollards or road block
you can touch It or knock it
it is soft? no.. it is very hard.
it looks like a big round ball.
can you count how many bollards are here
one two....you can pat it, play the drum(打鼓)
bollards are used to prevent heavy vehicles from coming passed in to a certain space
you can see here
We have one panited like a basketball
and this one panited like a football
